Improvement in driven wells



AJAcoB,rasolw Improvement in Driven Wells. 115,452..`

Patented May 30,1871.

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` tiene@ JAOOB EDSON, OF BOSTON, MASSACHUSETTS.

IMPROVMENT In neu/EN WELLS.

Speciiicationformihg part of Letters Patent No. 115,452, dated May 30, 1871.

JACOB Ensomof the city of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements on Strainers, of which the following is a specil fication:

Nature and Objects" of the Invention.

strainer is surrounded.

` On the drawing, Figure 1 is a side elevation Fig. 2 is a centrallongitudinal section; Fig.-

3 is a groundplan; and'Fig. 4 is a cross-section, over the line w y, taken on Fig. l.

Similar letters refer to similar parts whereever they occur on the drawing.

It is of great importance for the well-work-` ing of the different parts of a pump to have a perfect strainer that will prevent the impurities and gritty substances from the earth passing up into the suction-pipe, and at the same time prevent the strainer vfrom being clogged up with the ne mud and slime that frequently exists in theearth through `which the Water 1s drawn.

`To accomplish these purposes I construct 1j my strainer as follows: a on the drawing is -the'suction-pipe, perforated with a number of "holes, b b b, made larger in vdiameter on the outside of the pipe andtapering toward the n inside of said pipe, as shown in Figs. 2 and 4. Thelower end of the -suctionpipe is closedup by means of a cast-iron pointer, c, welded firmly onto thesuction-pipe by putting said pipe into the mold and casting the iron p around and inside lthe suction-pipe, as shown 1f in Fig. 2. lThe upper end of the `suction- `f pipe a is cut with a screw-thread so asl to be easily connected with any length of pipes e e i that may be needful.

. surrounded by the strainer d, made of perforated and corrugated sheetmetal, as shown.

e The metal employed for this purpose is first e y perforated with as small holes as can practicably be made. e 1 ai punched through the metal there arise burrs lion the under side of the metal.

The suction-pipe a. is

When the small holes are 'Ihe plate is `31` 1then rolledand corrugated by being passed through dies or rollers, when the burrs partially close up the holes, and thus diminish their size, so as to make an efficient strainer. The lnetallic perforated and corrugated` plate is then soldered together lengthwise after being bent like afluted pillar, and afterward sprung over the suction-pipe a, as shown in Figs. l, 3, and 4. By this arrangement `the suction-pipe is strengthened materially. The strainer d is soldered onto the top of the suction-pipe, as shown in Fig. 1. The corrugations of the strainer d form upright channels around the suction-pipe a, whereby the admittance of wat'er to the said pipe a is greatly facilitated. The holes b b b are made larger in diameter on the outside so as to reach two channels or grooves on the strainer, as shown at e, Fig. 4, and made tapering inward, so as to obtain sufiicient strength to stand sundry twistings or blows that may be occasioned. For the purpose of obtaining a more efcient or double strainer I place, at option, a conicalshaped strainer, f, made of similar perforated metal, not corrugated, inside the suction-pipe a, as shown in Fig. 2. The upper end of this conical strainer j' lits closely onto the inside of the suction-pipe a, as shown. The object of this secondary strainer is to prevent certain grit or impurities that may come into the suction-pipe through the corrugated strainer d from entering the upper part of the suction-pipe. The grit or mud that possibly may enter through the holes b b b into the suction-pipe a will fall to the bottom of said pipe, and, therefore, not obstruct the flow of the water into the upper part of the conical strainer f. The action of the water drawn through the conical strainer f tends to wear off certain particles that have passed through the corrugated strainer d, and, by thus diminishing their size, prevents the valves in the pump from being damaged as they are allowed-to pass up through the pump.

Heretofore it has been a great difficulty in producing sheets perforated with-holes small enough to prevent grit from entering; but, by rolling the sheets after they are perforated, I am able to obtain holes of any required size and of the required form-viz., smaller on the outside than Within.

In other strainers the trouble has been, if holes of the required size could be made, enough of them could not be made on an unccrrligated plate to afford suitable supply of Waiter Without making the strainer too large to drive easy, or so long` as to endanger one or the other end of said strainer from bein g above or below the stratum of earth that supplies the Water.

Having thus fully described the nature, construction, and operation of myinvention,1\vish to secure by Letters Patent and claim- The combination of the s'etiompipe a,11ole`s` holes b b b7 the pointer o Welded to the suctionpipe, and the corrugated perforated strainer d, when all are arranged and combined substantially as set forth and described.

JACOB EDSON.

Witnesses:

ALBAN ANDRN, FRANCIS GARDNER. 

